EPMSelectMemberID Doesn't Work inside of a "IF"

Hi,

I've been trying to use the EPMSelectMemberID inside of a IF formula but it doens't seems to work, is it the right behavior? If yes, is there a workaround for it?

Here is an example of the formula: =IF(A2="Y",EPMSelectMemberID(,"TIME,,,,"ID")," - ")

Thanks